TSC TS432CT

TS432/432A/432B
Adjustable Precision Shunt Regulator
Sink Current Capability up to 100mA
General Description
The TS432/432A/432B is a three-terminal adjustable shunt regulator with specified thermal stability. The output voltage
may be set to any value between Vref (approximately 1.24V) and 18V with two external resistors. The TS432/432A/432B
has a typical output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making the
TS432/432A/432B excellent replacement for zener diode in many applications.
This series is offered in 3-pin TO-92, SOT-89, SOT-23 and 5-pin SOT-25 package.
Features
—
Standard Application
Precision Reference Voltage
TS432
1.24V±2%
TS432A 1.24V±1%
TS432B 1.24V±0.5%
—
Minimum Cathode Current for regulation: 150uA(typ)
—
Equivalent Full Range Temp. Coefficient: 50ppm/ C
—
Programmable Output Voltage up to 18V
—
Fast Turn-On Response
—
Sink Current Capability of 1.0 to 100 mA
o
—
Low Dynamic Output Impedance: 0.2Ω
—
Low Output Noise
Ordering Information
Block Diagram
Part No.
Operating Temp.
(Ambient)
TS432xCT
TS432xCY
Package
TO-92
o
-20 ~ +85 C
TS432xCX
SOT-89
SOT-23
TS432xCX5
Note: Where x denotes voltage tolerance.
Blank: ±2%
A: ±1%
B: ±0.5%
SOT-25
Pin Assignment
Pin No.
Pin
Description
TS432/A/BCT
TS432/A/BCY
TS432/A/BCX
TS432/A/BCX5
1
1
1
4
Reference
2
2
3
5
Anode
3
3
2
3
Cathode
1, 2
TS432/A/B
1-7
Non connect
2003/12 rev. A
Absolute Maximum Rating
Cathode Voltage (Note 1)
Continuous Cathode Current Range
Reference Input Current Range
Power Dissipation (Note 2, 3)
Vka
20
V
Ik
-10 ~ 200
mA
Iref
10
mA
TO-92
0.625
TO-89
Pd
0.5
SOT-23 / SOT-25
W
0.3
Operating Junction Temperature Range
0 ~ +125
o
C
-65 ~ +150
o
C
Tj
Storage Temperature Range
TSTG
Note 1: Voltage values are with respect to the anode terminal unless otherwise noted.
o
Note 2: Tj Max = 150 C
o
Note 3: Rating apply to ambient temperature at 25 C
Recommend Operating Condition
Cathode Voltage Range
Cathode Current Range (for regulation)
Vka
Ref ~ 18
V
Ik
1 ~ 100
mA
Electrical Characteristics
o
(Ta=25 C, unless otherwise specified.)
Parameter
Reference
TS432
voltage
TS432A
Symbo
Test Conditions
voltage, over temp. (Note 4)
Reference Input current
Vka =Vref, Ik=10mA (Figure 1)
Vref
Iref
∆Vref /
change in cathode Voltage
∆Vka
current, over temp.
Minimum operating cathode
current
Off-state Cathode Current
Dynamic Output Impedance
TS432/A/B
1.227
Ta = full range
Vka =Vref, Ik=10mA (Figure 1)
R1=10KΩ, R2= ∞ , Ika=10mA
(Figure 2)
Ika=10mA, Vka = 18V to Vref
(Figure 2)
Max
Unit
1.264
1.240
1.233
Radio of change in Vref to
Deviation of reference input
Typ
1.215
Vref
TS432B
Deviation of reference input
Min
1.252
V
1.246
--
5
20
mV
--
0.15
4.0
uA
--
-1.0
-2.7
mV/V
--
0.1
4.0
uA
--
60
200
uA
--
0.5
2.0
uA
--
0.2
0.5
Ω
Ta= full range
Iref(DEV)
R1=10KΩ, R2= ∞ , Ika=10mA
(Figure 2)
Ika(min)
Vka=Vref (Figure 1)
Ioff
Vref=0V (Figure 3)
|Zka|
Vka=18V
f<1KHz, Vka=Vref
Ika=100uA to 15mA (Figure 1)
2-7
2003/12 rev. A
Note 4. Deviation of reference input voltage, VDEV, is defined as the maximum deviation of the reference over the full
temperature range.
The average temperature coefficient of the reference input voltage αVref is defined as:
| αVref | = [ VDEV / Vref(25) ] * 106 / T2 – T1…………………….. (PPM/ oC)
Where: T2-T1 = full temperature change.
αVref can be positive or negative depending on whether the slope is positive or negative.
Note 5. The dynamic output impedance, Rz, is defined as:
| Zka | = ∆Vka / ∆Ika
When the device is programmed with two external resistors R1and R2 (see Figure 2). The dynamic output
impedance of the overall circuit, is defined as :
| Zka | = ∆v / ∆i | ≈ Zka | * ( 1 + R1 / R2)
Test Circuits
TS432/A/B
3-7
2003/12 rev. A
Application Examples
TS432/A/B
4-7
2003/12 rev. A
Typical Performance Characteristics
TS432/A/B
5-7
2003/12 rev. A
TO-92 Mechanical Drawing
A
DIM
B
A
B
C
D
E
E
C
H
F
TO-92 DIMENSION
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX
4.30
4.30
4.70
4.70
0.169
0.169
0.185
0.185
14.30(typ)
0.43
2.19
0.49
2.81
0.563(typ)
0.017
0.086
0.019
0.111
F
3.30
3.70
0.130
0.146
G
H
2.42
0.37
2.66
0.43
0.095
0.015
0.105
0.017
G
D
SOT-89 Mechanical Drawing
A
SOT-89 DIMENSION
I
B
DIM
C
H
G
E
D
J
F
TS432/A/B
6-7
MILLIMETERS
MIN
MAX
INCHES
MIN
MAX
A
4.40
4.60
0.173
0.181
B
C
1.50
2.30
1.7
2.60
0.059
0.090
0.070
0.102
D
0.40
0.52
0.016
0.020
E
F
1.50
3.00
1.50
3.00
0.059
0.118
0.059
0.118
G
0.89
1.20
0.035
0.047
H
I
4.05
1.4
4.25
1.6
0.159
0.055
0.167
0.068
J
0.35
0.44
0.014
0.017
2003/12 rev. A
SOT-23 Mechanical Drawing
A
B
F
SOT-23 DIMENSION
DIM
E
G
D
MILLIMETERS
MIN
MAX
INCHES
MIN
MAX
A
2.88
2.91
0.113
0.115
B
C
0.39
1.78
0.42
2.03
0.015
0.070
0.017
0.080
D
0.51
0.61
0.020
0.024
E
F
1.59
1.04
1.66
1.08
0.063
0.041
0.065
0.043
G
0.07
0.09
0.003
0.004
C
SOT-25 Mechanical Drawing
SOT-23 DIMENSION
DIM
A
MAX
3.00
MIN
0.106
MAX
0.118
B
0.25
0.50
0.010
0.020
1.90(typ)
0.95(typ)
0.075(typ)
0.037(typ)
E
1.50
1.70
0.059
0.067
F
H
1.05
2.60
1.35
3.00
0.041
0.102
0.053
0.118
L
7-7
INCHES
MIN
2.70
C
D
TS432/A/B
MILLIMETERS
0.60(typ)
0.024(typ)
2003/12 rev. A